Carbureter.



E.. T. BARNES.

CARBURETER.

APPLICATION man Die. l, 1913.

Patented Apr. 6, 1915.

WITNESS/58,'

ATTORNEY 45 ln said gures the letter a indicates 'a' Entered within sns ATENT oleron.

LLEWELLYN T. BARNES, OF SEAv CLIFF, NEW YORK.

CRBURETER.

Lille. specification @Letters Patent. patented Apu; 1915, Application led December 1, 1913. Serial No. 803,877.

T all whom t may concern.' haust passage from theengine. Said Ven- Be it known that l,v LLEWELLYN T. turi tube is mounted upon a base member c BARNES, a citizen of the United States, and by means of vertical posts o', supporte resident of Sea Clili", in the county of Nasfrom said base and passed through lugs, as

sau and Sta-te of New York, have invented c2, extending from the jacket a2. Thesaid 60 certain new and useful Im rovements in lugs support the Venturi tube with itsjacket Carbureters, ofy which the ollowing is a slidably upon the posts o', and said Venturi specification. i member is thus vertically adjustable. Means rl`his invention relates to carbureters for are shown in this application for maintain# lo use with internal combustion engines and ing the Venturi member in any fixed posi? 65 my improvements have particular relation tion vertically with respect to the posts 0', to a novel means devised by me for regulait being my intention to rovide supportin tion of the fuel and air sup lies whereby the means which are capab e of holding said proportionate quantities o fuel, as well as Venturi member in a lixed position and of the main and auxiliary air supplies may be adjusting it vertically, the posts o serving 70 furnished in proper quantities to suit varyas gpides.l Obviously said Venturi tube may ing cylinder requirements. In other words be eld in a certain fixed position with, remy improved carbureter is so arranged that lation to the posts c as by a set screw 03. the adjustment of a 4single moving part The basemember 0 is adapted forconnec- 2o .thereof eiects in proper ratio the fuel suption with the intake of an internal combusv75 ply, the main air supply, and the auxiliary tion cylinder, and is provided with a acket air supply, whereby under dilerent degrees c* providing a space, with threadedJ pipe of adjustment the user can depend upon the openings 05, that the chamber c formed by admission into the cylinder of a correctly said jacket may serve for the passage of proportioned mixture of fuel and air withwater from the circulatory system of the 8o out the necessity of separately adjusting the enOine. several supplies. he axis of the passage in member c is in In the drawing accompanying this applialinement with the axis of the Venturi memcation, Figure 1 is a vertical side sectional ber, the lower openin of said Venturi memt@ view of my improved carbureter, thejuel ber approaching sai member c over van insupply member being shown in full lines, tervenin space. Threaded within the mem- .l and Fig. 2 is a vertical .front sectional view ber c, to e capable of vertical adjustment 'is of the same.l a iiared inlet member d in opposed relation lln the preparation of my improved carto the lower end of the Venturi tube a, said 35 bureter l take advantage of the known char-y venturi lying axially partway within the 90 acteristics of the Venturi tube as a passage entrance to said member d, and being cafor the main air supply, both on account pable of varyingthe space between the peof the increased velocity of traverse through ripheral edge of the Venturi member and a passage having a constricted throat, and the inner surface of the member d to regu- G@ also because the constricted portion of the late the size of the clearance therebetween tube lends itself to the convenient regulation with the vertical adjustment of the Venturi in capacity of air passa e by means of cermember, whereby the auxiliary air supply tain other instrumenta ities employed by which enters through the member d may be suitably regulated.

the member e as through loo Venturi tube having the constrictedportion stuiiing box e in the wall thereof is a fuel a', said tube a serving for the lpassage ot a pipe e', which fuel pipe is bent within said main air supply, and said tube having fitted member e and continued axially thereof into in its u per end a cup-like member l5 supthe lower portion of the Venturi member a. plied with a covering of wire mesh or other Y Said i'uel pipe carries at its free end within 105 screen to lter the air entering said tube. the Venturi' tube a tubular nozzle member f @aid Venturi tube is surrounded with a whose external contour tapers in opposite jacket, as a2, forming a chamber an, and havdirections, from an intermediate point, as f, ing threaded tube orifices at in order that at which point the girth of said member f is said chamber e may be included in the em. at its maximum, forming an annular shoul- El@ der, the member f presenting said shoulder in about the horizontal plane of the constricted portion a of the Venturi tube. At said point of its maximum girth the member f is provided with radial orilices f2 for the supply of liquid fuel received from the fuel pipe e. Within the upper end of member f there is entered the pointed end of a needle valve g, the stem of which valve is threaded through a boss 71, of a spider it which is fited within the upper end of the Venturi tu e.

The inner wall of member c may be provided with an orifice z' communicating from the water jacket, said orifice being closed and controlled with a valve j that is threaded through a bushing j in the water jacket c4, said valve also being provided with a stuiing box i2. The purpose of this orifice z' with controlling valve is to admit water from the water jacket into the fuel mixture when desirable for employment therewith, as when there is a full load or over load on the engine.

It will be obvious from the construction and arrangement of the members comprising my improved carbureter that the movement of the Venturi member upon its guides c has the effect of regulating the capacity of the main air supply, the fuel supply, and the auxiliary air supply. The enlarged body girth of member f, when exactly in the horizontal plane of the restricted portion of Venturi .member a, has reduced the passage between said members to the minimum, and also the needle valve g has diminished the supply of liquid fuel to orifices f to the lowest point in accordance with theset adjustment of said needle valve. Also in the said position of the Venturi member its lower end is in such relation to the iared member ai that the clearance between said members is at its minimum and proportioned to admit the correct auxiliary air supply from the fuel mixture. It is equally `obvi`ous, under the arrangement of parts described, that the movement of Venturi member a, away from member d, increases in correct ratio, the fuel and air supplies, to suit the varying requirements of the engine as to load and speed.

My improved carbureter is adapted for use with any liquid, and as heated by the engine exhaust and by the hot water from the circulatory system, is particularly adapted for use with kerosene.

While shown and described as arranged vertically it is evident that the Venturi tube may be disposed in a horizontal or other position.

I claim:

l. In a carbureter, the combination of an auxiliary air supply tube with a flaring inlet, a Venturi supply tube arranged in axial relation thereto, a fuel supply pipe extending' axially through said auxiliary tube and en tered within said Venturi tube, and a fuel supply member extending from said pipe, said member having an annular shoulder with radial orifices directed toward the constricted portion of .said Venturi tube, together with a needle valve adjusted within said fuel supply member, said Venturi tube being axially adjustable to at one movement regulate the fuel supply and both air suplies. p 2. A carbureter having a Venturi tube for air supply and a fuel supply member disposed axially therein, said'fuel supply memn ber having radial orifices directed toward the constricted portion of said tube, one of said members being movable axially with respect to the other, a valve for said fuel supply member, an auxiliary air supply member in axial relation to said Venturi tube, means for regulating the air, fuel and auxiliary air supplies proportionately with the movement of said movable member, and a heating jacket for said Venturi tube.

Signed at borough of Manhattan in the county of Nassau and State of New York this 28th day of November A. D. 1913.

LLEWELLYN T. BARNES. Witnesses:

SADIE L. BLOCK, GERTRUDE E. COYLE. 

